It's beginning to sound like your particular machines need either
more

RAM or to use a different temporary location which is on a permanent
location. Just add some rules to clean it all up at reboot.

Perhaps there are a couple of thousand users with the same use case,
I don't
know if it is the case but should be investigated rather than
discarded.

That does NOT mean that Debian should change the default just to
suit

low memory devices.

So let's put minimum requirements unnecessarily high so a few people
with
super expensive laptops can have a 0.3μs speedup? (And people with
cheaper

hardware might never find out why the hell "linux" freezes if they
click on a
large tar archive).

Doing that on inferior hardware is just plain stupid. If you have
plenty of

disk space, just unpack the tar archive.

No. The default is fine and sane but no default will ever satisfy
every
possible device. Low memory devices have many many more problems
than

just where /tmp is mounted.

But with tmpfs on disk, more devices would work by default (the ones
with a

lot of memory and disk, and the ones without much memory but with
disk space).

And those with lots of RAM but not so much disk space (SD card or USB
driver or
even with no hard drive at all)? There's no solution that works for
everyone in
all situations. However, tmpfs at least works for many of them. If you
KNOW
that this default does not fit your use-case, why don't you simply
change the